A063773 Smallest number that is centered polygonal in exactly n ways.

4, 10, 19, 31, 61, 211, 181, 361, 631, 841, 1261, 5461, 2521, 6931, 18481, 20791, 13861, 27721, 41581, 83161, 138601, 245701, 235621, 180181, 556921, 360361, 540541, 1670761, 1081081, 1413721, 2162161, 3603601, 4324321, 3063061

Offset: 1

Author

David W. Wilson, Aug 15 2001

Keywords

• nonn

Examples

			19 is the smallest number that is centered k-gonal for exactly three k (k = 3, 6, or 18). Hence a(3) = 19
		

Links

• Donovan Johnson, Table of n, a(n) for n = 1..90